Stereoscope.



No. 705,706. Patented Jul 29 I902 H. E. mcumuun. y

STEREOSCOPE.

(Application filed Nov. 4, 1901.)

(No Model.)

INVENTOR Y ATTORNEYS Y sums PtTERS cc. NOTO-UTHOH wuwmnmu, D. c

{ggugaw UNITED STATES PATENT OFFICE.

HENRY E. RICHMOND, OF WESTWOOD, NElV JERSEY.

STQEREVOSQOPE.

SPECIFICATION forming part of Letters Patent No.705,706, dated July 29, 1902. Application filed November 4,1901. Serial No. 80,976- (No model) To alt whom it mag concern.-

Be it known that I, HENRY E. RICHMOND, residing at Westwood, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Ste- I 5 opening was left in the holder, into which the lens was wedged in place. This manner of making the holder is not only expensive, but in wedging the lens in place sometimes the parts of the holder were sprung, and also ow- :0 ing to the contraction and expansion of the wood the lens became loose and worked out of the holder. Attempts have been made to overcome these objections inawooden holder by making said holder in one piece andto cut holes therein in which the lens-frames for carrying the lens were fastened; but, so far as I am aware, there has been no successful device of either of these types, owing to the expense of making and the manner of mounting the frame in the holder.

It is the object of my invention to overcome the objections in the construction of said lens frames and to make a frame that may be easily and cheaply constructed and that can be readily attached to a wooden holder and when attached hold the lens-frame in place.

With these ends in View I will nowIset forth my invention in detail, the invention being illustrated in the accompanying drawings,

which form a part of this specification.

In thedrawings, in which the same letter or reference-numeral designates the same part in the different views, Figure l is a rear view of a stereoscope, showing the lens in the frame and mounted in a circular opening in the holder. Fig. 2 is avertical longitudinal section through the holder and one of the I lens-frames, taken on the line 2 2, Fig. 1.

Fig. 3 is a cross-section of one of the lensframes, taken on the line 3 3, Fig. 2. Fig. i

in the ring andhold the lens in place.

is also across-section of one of the lens frames, showing the tapered form of ring.

The part lettered A represents the lensframe holder,having an opening A therein. B is the hood of the stereoscope, O the shaft, and D the partition, allof well-known construction. My improved lens-frame is represented by the reference-letterE. This frame is made of metal and preferably of aluminium, so that it may be easily stamped into the proper shape and at small cost. It consists of the ring 1, which may be slightly tapered. This ring has an outer annular rim or flange 2, which rests against the forward or outersurface of the frame-holder A when the frame is in place. The other end of the ring has an internally-proj ectin g sheet or flange 3, having an opening or sight 4 therein, which is preferably substantially square, as shown in the drawings. One face of the lens 5 rests against the inner face of this flange when the parts are assembled. The part marked 6 is a mat which rests against the other face of the lens to hold the said lens in place in the frame. The outer edge of this mat conforms to the shapeof the ring, and the diameter thereof may be slightly greater than the internal diameter of the ring at that part where the mat is seated, so that the mat may fit tightly with- In order, however, tomore securely hold the mat, the rim of the ringmayb'eindented inwardly just back of and close against the mat, as shown at 7. This mat also has a substantially square opening 8 therein to conform to theopening in the sheet or flange 3.

9 is a ring whoseinternal diameter is slightly less than the outer diameter of the ring, so that it may fit tightly over the ring 1. The ring 9 has an outer extending flange 10, which rests against the inner surface of the frameholder A when the frame is in place.

The lens is secured-in the frame and the frame secured in the holder in the following manner: The lens 5 is placed in the ring 1 with one of its faces resting against the flange 3. The mat 6 is then put in the ring and pressed against the other face of the lens. In order, however, to more securely hold the mat in place, the ring is indented after the mat is inserted just in the rear of and close up against the mat, as shown at 7. This ring is now inserted in the opening A in the frameholder with its flange 2 resting against the outer face of said holder. The ring9 is now placed over the outer end of the ring 1 and pressed down over said ring until'its flange rests against the inner face of the holder A. Owing to the fact that the outer ring is slightly smaller internally than the outside of the ring 1, the two rings will fit close together and be tightly held within the holder.

This device, it is seen, is very simple and is easy to construct and may be easily and readily assembled and when assembled will securely hold in place the'lens-frame, as actual construction has demonstrated.

It is clear that minor changes may be made in the device as shown and described Without departing from the spirit of my inven tion. The shape of the lens or ring may be changed to some other form from that shown, and other means may be used to secure the lens in place in the frame, and I therefore do not limit myself to the exact construction shown and described.

Having now fully described my invention,

what Iclaim as new, anddesire to secure by LettersPatent, is-

1. In a stereoscope, a lens-frame holder, a

- ring having an inwardly-projecting part or 8. A stereoscope lens-frame consisting ofa ring having an inwardly-projecting flange against which the lens may rest, a mat for holding the lens in place, and another ring surrounding the first-mentioned ring.

4.'In a stereoscope, a lens-frame holder having an opening therein, a ring having an inwardly-projecting flange against which the lens may rest, a mat for securing the lens in place, an outwardl y-proj ectin g integral flange on the ring resting against the outer face of the holder, and means for securing the ring within the holder.

5. In a stereoscope, a lens-frame holder having an opening therein, a ring in the holder having an'inwardly-projecting flange against which the lens may rest, a'mat in the ring to hold the lens in place, outwardly-projecting flanges on the ring resting against the outer face of the lens-frame holder, an outer ring surrounding the first-mentioned ring and having an outwardly-projecting flange, the said outer ring adapted to hold the inner ring in place in the lens-frame.

6. In a stereoscope, a lens-frame holder having an opening therein, an inner ring adapted to be secured in the opening in said holder, said ring having an inwardly-projecting flange against which one face of a lens may rest, a mat adapted to press upon the other face of the lens and hold the lens in place, inner projections on the ring to hold the mat in place, an outwardly-projecting flange on said ring adapted to rest against the outer face of the frame-holder, an outer ring fitting tightly over the inner ring and having a flange adapted to rest against the inner face of the holder and hold the inner ring in place in the holder.

7. In a stereoscope, a lens-frame holder having an opening therein, a tapered ring in the holder having an inwardly-projecting flange against which the lens may rest, a mat in the ring to hold the lens in place, outwardly-projecting flanges on the ring resting against the outer face of the lens-frame holder, the outer ring surrounding the first ring and having an outwardly-projecting flange, the said outer ring adapted to hold the inner ring in place in the frame.

In testimony whereof I affix my signature in the presence of two witnesses.

HENRY E. RICHMOND.

Witnesses:

ELMER UNDERWOOD, H. M. SEAMANS. 

